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REP Design Products

TEST RESULTS PAGE

This is where we provide results from tests done on our products, by us and by others.


Here's a list of the currently posted tests:

  1. SWR Test with SHUNT-100.
  2. High power (500 watts) test of insulation used in UHAM mounts.
  3. Power loss tests through CNCT-PL259 weather resistant quick disconnect for coax, on 10m and 6m




(1)  SWR Test: SHUNT-100

Date of Test:    12/29/2007                                      Performed by: Dick Post, N7EMW

Test equipment used:     Icom IC-7000 transceiver, meter on IC7000 to measure power output and SWR, powered by TGE "N8XJK Boost Regulator" to provide steady 14volts > LINKS PAGE                                       

REP Design Products Used During Test: SHUNT100 load inductor, CNCT-PL259 WXQD

Test Conditions and Setup: See diagram below. Not shown are several "Mix 31" ferrite beads on antenna and transceiver ends of coax and antenna motor wire cable.

RESULTS: The following are the actual results I obtained, with the SHUNT-100 adjusted on 160m and not re-adjusted for any other band. The CNCT-PL259 WXQD was also in-line but of course has no affect on the SWR.

As you can see, with the SHUNT-100 tuned ONCE on 160m, you are able to operate on all bands with acceptable SWR - this assumes that your antenna, ground and mast setup will resonate on all bands - shunts and other impedance devices only work if your antenna will resonate although at high SWR. Without the SHUNT-100 I can not operate on 160 and 80 due to high SWR. I do NOT have to re-adjust the SHUNT once tuned on 160m.

Band

Freq

Antenna

Icom IC-7000 output (watts)

SWR, x:1

160 (2)

1.82 (1)

added 50 inch whip to ant. setup used for 80-10m setup

100

1.2

160 (2)

1.99

100

1.2

80 (2)

3.9

80-10m Setup:                                                       Hi Q Antenna 5/160 motorized antenna (5 inch dia. coil) + 12 inch mast above coil + cap. hat with 2 lobes (other 2 lobes removed); NO whip above cap. hat; antenna can be "garaged"

100

1.3

40

7.25

100

1.6

30

10.15

100

1.9

20

14.26

100

1.1

17

18.15

100

1.2

15

21.4

100

1.1

12

24.95

100

1.1

10

28.3

100

1.1

10

29.69

100

1.5

Footnotes:        
(1) lowest frequency will tune unless install 3-4 cap. hat lobes
(2) without SHUNT-100 (or an impedance device) SWR is too high to operate 




 (2) High Power Test of Antenna Insulaton

Date of Test:      October, 2007                                    Performed by: Les, N4EZK

Test equipment used:      Mobile installation with Icom 7000 and SG-500 amplifier, output 500+ watts                                      

REP Design Products Used During Test: INSUL KIT 01 (same insulation as provided with UHAM-100 and UHAM-150 mounts)

Test Conditions and Setup: UHAM mount insulation used with his Hi Q Antennas 5/160 antenna on a modified Tarheel mount. Les purchased my antenna insulation as the Tarheel insulating washer is a bit thin and was wearing out. Since he runs high power, he was willing to run this test.

He has just purchased a UHAM-150 mount with SHD-SO239 (first one producted, lated Dec. 2007) to use with his 5/160 antenna to replace his Tarheel mount.

The following is Les' photo of his antenna, and  "UHAM-type" insulation on Tarheel mount.

RESULTS:

Hi Dick,

Here’s a pic of the insulation as mounted on my vehicle.  I’ve tested it on 14.300  USB running approximately 500w output with no difficulty.  Will test it on other frequencies as time permits.  In the mean time, I can say It will probably perform as required, wet or dry.  The only thing I can see that may cause different results is your mount is different than the one I am using.

More later.

-Les Nearier N4EZK

Note: Les worked with N2VZ on his Turbo Tuner

 




(3) Power Loss: CNCT-PL259 weather resistant quick disconnect for coax

Date of Test:    12/31/07                                     Performed by: Dick Post, N7EMW

Test equipment used:  Diamond SX-600 HF-UHF power meter, MFJ-2600 300w dry dummy load                                        

REP Design Products Used During Test: xx

Test Conditions and Setup: Icom 7000 transceiver, FM mode, full power, Comet CF-360 duplexer, "CNCT" quick disconnect

RESULTS:

The "CNCT" has  very low, (1 watt or 1%), insignificant,  loss. This was tested on 10m and 6m as these bands are on the high side (aka "most loss") of the HF band. For the input power measurement, the test equipment was connected to the PL259 plug that connects to the SO-239 connector on the "CNCT" radio side. For the antenna side test, the test equipment was connected to the antenna side SO239 on the "CNCT".

 mHz

Power at INPUT (Radio side) of "CNCT"

  Power at OUTPUT (Antenna side) of "CNCT"

 Power Lost In "CNCT"

 29.69

99 watts

 98 watts

 1 watt

 53.99

 90

 89

 1 watt

 




(x) future test

Date of Test:    xx                                      Performed by: xx

Test equipment used:  xx                                          

REP Design Products Used During Test: xx

Test Conditions and Setup: xx

RESULTS:

xx




 (x) future test

Date of Test:    xx                                      Performed by: xx

Test equipment used:  xx                                          

REP Design Products Used During Test: xx

Test Conditions and Setup: xx

RESULTS:

xx

 

 

 

 

 


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